31324366615457 has 2 divisors, whose sum is σ = 31324366615458. Its totient is φ = 31324366615456.

The previous prime is 31324366615447. The next prime is 31324366615489. The reversal of 31324366615457 is 75451666342313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31324125465616 + 241149841 = 5596796^2 + 15529^2 .

It is a cyclic number.

It is not a de Polignac number, because 31324366615457 - 2¹² = 31324366611361 is a prime.

It is a super-2 number, since 2×31324366615457² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31324366615427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662183307728 + 15662183307729.

It is an arithmetic number, because the mean of its divisors is an integer number (15662183307729).

Almost surely, 2^{31324366615457} is an apocalyptic number.

It is an amenable number.

31324366615457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324366615457 is an equidigital number, since it uses as much as digits as its factorization.

31324366615457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 56.

The spelling of 31324366615457 in words is "thirty-one trillion, three hundred twenty-four billion, three hundred sixty-six million, six hundred fifteen thousand, four hundred fifty-seven".